Method saveToFile

src/App/Document.cpp:1963–2102

}

bool Document::saveToFile(const char* filename) const
{
    signalStartSave(*this, filename);

    auto hGrp = GetApplication().GetParameterGroupByPath(
        "User parameter:BaseApp/Preferences/Document");
    int compression = static_cast<int>(hGrp->GetInt("CompressionLevel", 7));
    compression = Base::clamp<int>(compression, Z_NO_COMPRESSION, Z_BEST_COMPRESSION);

    bool policy = GetApplication()
                      .GetParameterGroupByPath("User parameter:BaseApp/Preferences/Document")
                      ->GetBool("BackupPolicy", true);

    auto canonical_path = [](const char* filename) {
        try {
#ifdef FC_OS_WIN32
            QString utf8Name = QString::fromUtf8(filename);
            auto realpath = fs::weakly_canonical(fs::absolute(fs::path(utf8Name.toStdWString())));
            std::string nativePath = QString::fromStdWString(realpath.native()).toStdString();
#else
            auto realpath = fs::weakly_canonical(fs::absolute(fs::path(filename)));
            std::string nativePath = realpath.native();
#endif
            // In case some folders in the path do not exist
            auto parentPath = realpath.parent_path();
            fs::create_directories(parentPath);

            return nativePath;
        }
        catch (const std::exception&) {
#ifdef FC_OS_WIN32
            QString utf8Name = QString::fromUtf8(filename);
            auto parentPath = fs::absolute(fs::path(utf8Name.toStdWString())).parent_path();
#else
            auto parentPath = fs::absolute(fs::path(filename)).parent_path();
#endif
            fs::create_directories(parentPath);

            return std::string(filename);
        }
    };

    // realpath is canonical filename i.e. without symlink
    std::string nativePath = canonical_path(filename);

    // check if file is writeable, then block the save if it is not.
    Base::FileInfo originalFileInfo(nativePath);
    if (originalFileInfo.exists() && !originalFileInfo.isWritable()) {
        throw Base::FileException("Unable to save document because file is marked as read-only or write permission is not available.", originalFileInfo);
    }

    // make a tmp. file where to save the project data first and then rename to
    // the actual file name. This may be useful if overwriting an existing file
    // fails so that the data of the work up to now isn't lost.
    std::string uuid = Base::Uuid::createUuid();
    std::string fn = nativePath;
    if (policy) {
        fn += ".";